What is the first step in the basic procedure for flaring a tube?

The process of flaring a tube begins with cutting the tube squarely. This is crucial because a clean and straight cut ensures that the flared end of the tube can form a proper seal when connected to a fitting. If the cut is not square, it can lead to an uneven flare which may compromise the integrity of the joint and result in leaks. After achieving a square cut, the subsequent steps, such as removing burrs, slipping on the fitting nut and sleeve, and using a flare tool, can be performed effectively, but the initial square cut lays the foundation for a successful flaring procedure.